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2. Townsend M. Knife crime needs public health strategy, says London police chief. Observer 2018 Jan 6. https://www.theguardian.com/uk-news/2018/jan/06/knife-crime-metropolitan-police-cressida-dick
3. Violent crime in England and Wales up 19%. BBC News 2019 Jan 24. https://www.bbc.com/news/uk-46984559
4. Knife crime reaches new high, police figures show. BBC News 2019 Oct 17. https://www.bbc.co.uk/news/uk-50080236
5. ONS. Deaths registered in England and Wales—21st century mortality: 2017. 2019 https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/deaths/datasets/the21stcenturymortalityfilesdeathsdataset